S4, E18: When an erratic and litigious client is murdered, Alicia is convinced to waive attorney/client privilege to help the police when she learns that the killer may also be targeting someone close to her. Also, Peter and Mike Kresteva vie for an influential endorsement and Diane receives a stunning offer. John Noble guest stars as Alicia's murdered client, Matthew Perry returns as Mike Kresteva and Stockard Channing returns as Alicia's mother.